On the first night after transferring schools, Jiang Xu gets lost in the middle of the night and runs into a black-haired guy in a fight. He throws half a brick to save him, only for the guy to show up on the first day of school with a fried dough stick in his mouth and become Jiang Xu's desk mate.
Oh, and that black-haired guy is also the one who taunted him with Ultraman during the day. He's his neighbor, too.
That night, the black-haired guy takes him in. Xu Xu, what a loss of face.
"The soundproofing in this building is bad, so keep the noise down at night."
One of them lives on the third floor and the other on the fourth.
Only later does Jiang Xu understand: "The soundproofing in this building really is bad."
Two people who were never properly caught find warmth in each other in the old part of town.
Theme: Growing up with companionship through youth, two people who were never properly caught.